Water-jacket for internal-combustion engines.



J. SPIEGEL. WATER JACKET POR INTERNAL GOMBUSTIION ENGINE APPLICATION FILED MAY 31, 1911.

Patented Spt.29, 1914.

lnvetof Julius Spiegel,

WLneswses :s dttor'n e5.

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' merges with the innerl end of the wall of the desired, free access to the outer end of the can be made to said device.

UNITED sTATEs PETENT OFFICE.

A CORPORATION JULIUS SPIEGEL, OF BERLIN, GERMNY, ASSIGNOR T0 GENERAL ELECTRIC GOMIANY,

0F NEW YORK.

WATER-JACKET FOR INTERNALCMBUSTION ENGINES.

To all whom it may concern Be it known that I, JULIUS SPIEGEL, a subject of theKing of Great Britain, residing at Berlin, Germany, have invented certain new and useful Improvements in Water- Jackets for Internal-Combustion Engines, of'which the following is a specification.

The invention relates to water jackets for coo-ling the cylinders of internal combustion engines and more particularly to jackets for the cylinder heads and the adjacent ends of the cylinders.

The object of the invention is the provision of an improved jacket structure which is eicient, simple, inexpensive, and which permits the cylinder heads to be readily removed for inspection of the interior of the cylinder and related parts.

In the accompanying drawing, Figure 1 is a section of the end of an engine cylinder; and Fig. 2 is a partial side view of an enme. l

The cylinder 3 is provided with a jacket 4 and with passages 5 and 6 through which the charge is admitted to the cylinder and the exhaust passes out from the cylinder. In the engine chosen for the purpose of illustrating the invention, the flow between these passages and the cylindery is controlled vby a tubular valve 7 which slides in the bore of the cylinder between the wall of the bore and the piston, said valve being actuated by any suitable mechanism. The 'outer end of the cylinder is closedby. a head 8 which rojects into the cylinder and carries paclging rings 9 for the valve 7. The head is pron vided with a centrally arranged hollow member 10, the inner end of whose wall head and whose outer end projects outwardly beyond the flange on the head. A spark plug or other igniting device can be mounted in the portion 11 o this member if connections A cover 12 having flanges 13 that fit against the end of the cylinder outside of the flange on the cylinder head o-r heads has also an opening member being afforded sol that Specification. 'of- Lcttersv'atent.

l said portion adjacent the inner end Patented Sept. 29, 1914.

ends of the members 10 are fitted. The contour of the outer edge of the cover conforms to thel general outline of the cylinder or group of cylinders of the engine, as shown in Fig. 2. The cover is held in place by the nut or nuts 15.

The construction described provides an annular cooling-water space 16 in the cylinder head between its inner and outer walls which is in communication with the space inclosed between the cover 12 and the end or ends 'of the cylinders. These spaces can be connected to the cooling water circulating system of the engine in any suitable manner. When access to the interior of the cylinder is desired for inspection, etc., the nut or nuts 15 are unscrewed and the cover 12 taken off, thus giving free access to the cylinder head or heads and to the interior of the cylinder or cylinders when the heads are removed.

The invention is not limited in its application tothe particular type of engine shown in the drawing, nor to an engine having any particular number of cylinders.

What I claim as new and desire to secure by Letters Patent of the United States, is,

1. In combination, a cylinder, a head that closes the end of the cylinder and projects into the bore of the cylinder, said head having a centrally arranged hollow member with a cooling-water space between it and the outer wall of the head, a cover for the head that fits against the end of the cylinder and incloses a cooling-water space between it and the end of the cylinder that is in communication with the yfirst mentioned space,`

said member having a cylindrical portion projecting outwardly through the cover, and a nut on said portion that holds the cover in place.

2. In combination, a cylinder, a head that closes the end of the cylinder and has a hollow cylindrical portion that projects into the bore of the cylinder, a tubular valve mounted in the bore of the cylinder between said portion andjthe wall of the bore, a centrally arranged hollow member within the head whose wall merges with the wall of thereof,

5 sgace between the inner and outer walls of e head, said hollow member having a cylindrical ortion that projects outwardly through t e cover, and a nut inv threaded 'engagement with said cylindrical portion that secures the cover in place. 10

In Witness whereof, I have hereunto set my hand this 6 day of May, 1911.

JULIUS SPIEGEL. Witnesses NATHAN NEWBURG, HEINRICH HLRSCH.

5 i W i Gopie of thisf'patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washingtonl). G. 

